Atoms and Bonding
What is the smallest unit of an element that still remains its properties?
Atom
What property of water allows it to stick to itself due to hydrogen bonds?
Cohesion
What scale measures how acidic or basic a solution is?
pH scale
What are the four major types of biological macromolecules?
Carbohydrates, lipids, proteins, nucleic acids
What type of bond involves the sharing of electrons between atoms?
Covalent bond
What is adhesion?
Water sticks to other surfaces
What substance increases hydrogen ion concentration in a solution?
What macromolecule is primarily used for long-term energy storage and includes fats?
Lipids
What type of weak attraction forms between slightly positive and slightly negative negions of molecules?
Hydrogen bond
What property of water allows it to resist temperature change?
High specific heat
What substance decreases hydrogen ion concentration in a solution?
Base
What macromolecule is made of amino acids?
Proteins
What type of bond forms when electrons are transferred from one atom to another?
Ionic bond
What property of water allows it to dissolve many substances due to polarity?
Universal solvent
What are substances that resist changes in pH called?
What pH value represents a neutral solution?
What macromolecule stores genetic information?
Nucleic acids
What type of interaction is responsible for the unique properties of water and arises from polarity?
Hydrogen bonding
What property of water causes ice to float because it is less dense than liquid water?
Density anomaly of water
What pH value represents a neutral solution?
7
What type of bond links amino acids together in proteins?
Peptide bond